A rust removal module

Abstract

The present invention relates to a rust removal module, which is characterized in that it comprises a plurality of rust removal units and a module bracket, wherein the plurality of rust removal units are fixed on the module bracket, the rust removal units comprise a rust removal unit body and a bullet, an air cavity is provided on the rust removal unit body, the bullet can be movably embedded in the air cavity, an external gas distribution mechanism is connected to the air cavity, and is used to introduce compressed gas into the air cavity to drive the bullet to reciprocate relative to the air cavity; the rust removal module makes it more convenient to assemble the rust removal device.

Description

Technical Field

[0001] The present invention relates to the field of rust removal equipment, in particular to a rust removal module. Background Art

[0002] At present, the rust removal methods on the market can be mainly divided into shot blasting, sand blasting and wire drawing without acid washing.

[0003] Shot blasting utilizes high-speed mechanical equipment to eject steel shots of a specific size using the centrifugal force of the blasting head. These shots violently collide with the material being removed, removing rust. Shot blasting equipment primarily consists of a shot blaster, a wear-resistant rubber belt, an auger, an elevator, a separator, a feed conveyor, a dust collector, and electrical equipment. Sandblasting utilizes high-pressure air to propel quartz sand onto the surface of a component. A complete suction-type dry sandblasting machine typically consists of six systems: the structural system, the media power system, the piping system, the dust removal system, the control system, and the auxiliary system. Wire drawing without pickling is primarily used for rust removal of wire rods. A non-pickling, shelling, and rust removal machine primarily consists of a five-wheel shelling mechanism, an adjustable cross-parabolic wire brush, a fully enclosed rust removal chamber, a forced lubrication system, a wire drawing die frame, and an electrical control system. Therefore, whether it is a shot blasting machine, a sandblasting machine, or a non-pickling, wire drawing machine, they all require a large number of components and are bulky. In order to reduce the size of the rust removal device, our company has developed a new rust removal device, which installs multiple rust removal units on a frame and uses the bullets of the rust removal units to knock the materials to remove rust; however, during production, the process of assembling the rust removal units is very cumbersome. Summary of the Invention

[0004] Based on this, the present invention provides a rust removal module, which is convenient for production and assembly.

[0005] The technical solution adopted by the present invention is a rust removal module, comprising a plurality of rust removal units and a module bracket, wherein the plurality of rust removal units are fixed on the module bracket, the rust removal unit comprising a rust removal unit body and a bullet, an air cavity being provided on the rust removal unit body, the bullet being movably embedded in the air cavity, an external gas distribution mechanism being connected to the air cavity, for introducing compressed gas into the air cavity to drive the bullet to reciprocate relative to the air cavity.

[0006] Preferably, at least some of the rust removal units are distributed in multiple rows and columns, and in a direction perpendicular to the feeding direction of the rust removal device, the centers of the knocking parts of at least some of the rust removal units in different rows are staggered.

[0007] Preferably, on the knocking surface of the rust removal module, the centers of the knocking parts of at least some of the rust removal units are distributed in a parallelogram lattice, and the line connecting the centers of the knocking parts of the rust removal units in the same row is inclined relative to the feeding direction of the rust removal device.

[0008] Preferably, the rust removal unit includes a bullet, the free end of the bullet is a knocking part, and the rust removal unit also includes a dust suction pipe, the opening of the dust suction pipe is arranged close to the knocking part.

[0009] Preferably, the module bracket includes a first fixing member, a second fixing member and a telescopic device, multiple rust removal units are fixed on the first fixing member, the first fixing member and the second fixing member are connected through the telescopic device, and the telescopic device drives the rust removal unit on the first fixing member to extend or retract.

[0010] Preferably, the rust removal unit body includes a first body and a second body, the first body and the second body are connected, a pressurization station is formed on the first body, a pressure relief station is formed on the second body, an air cavity is formed between the first body and the second body, and is located between the air cavity air inlet and the air cavity air outlet. A bullet outlet for the striking part of the bullet to pass through is also formed on the second body. When the bullet is in an extended state, the air cavity and the pressure relief station are connected, and the air cavity and the pressurization station are not connected. When the bullet is in a retracted state, the air cavity and the pressure relief station are not connected, and the air cavity and the pressurization station are connected.

[0011] Preferably, the second fixing member includes a first shell and a second shell, an accommodating space is formed between the first shell and the second shell, a through hole adapted to the bullet is formed on the second shell, the first fixing member and the rust removal unit are both located in the accommodating space, the telescopic device is fixed on the first shell, and the bullet can be extended from the through hole.

[0012] Preferably, at least part of the second bodies of the rust removal units are connected to each other as one body; and / or,

[0013] The first body is made of metal material, and the second body is made of plastic material.

[0014] Preferably, the rust removal unit body includes a first body and a second body, the first body and the second body are connected, the piston chamber, the buffer chamber and the air channel are formed in the first body, a pressurizing station is formed on the side wall of the piston chamber, the pressurizing station is connected with the buffer chamber through the air channel, a guide through hole is formed on the second body, a pressure relief station is provided on the side wall of the guide through hole, the striking part of the bullet can pass through the guide through hole and can extend out of the guide through hole.

[0015] Preferably, the bullet is formed with a bullet cavity, a first air hole and a second air hole, and the first air hole and the second air hole are both connected to the bullet cavity; when the bullet is in a retracted state, the second air hole is connected to the pressurizing station, and the first air hole is closed by the side wall of the guide through hole; when the bullet is in an extended state, the first air hole is connected to the pressure relief station, and the second air hole is closed by the side wall of the piston cavity; the material specific gravity of the second body is lower than the material specific gravity of the first body; and / or,

[0016] The first body includes a piston cylinder, an inner cover and an outer cover, the piston chamber is located in the piston cylinder, the bullet passes through the piston chamber, and the other end of the bullet is stuck in the piston chamber, the outer cover is fixed on the piston cylinder, the buffer chamber is surrounded by the outer cover, the inner cover and the piston cylinder, and the inner cover is located between the piston chamber and the buffer chamber; when the bullet is extended, the bullet and the inner cover seal the piston chamber, and the inner cover and the outer cover seal the buffer chamber; when the bullet is reset, the bullet presses the inner cover toward the buffer chamber.

[0017] The present invention integrates multiple rust removal units into a rust removal module. When producing a rust removal device, it is only necessary to install the rust removal module. Compared with the prior art which requires installing the rust removal units one by one, the assembly is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and other objects, features and advantages of the present invention will become more apparent through a more detailed description of the preferred embodiments of the present invention shown in the accompanying drawings. The same reference numerals indicate the same parts throughout the accompanying drawings, and the drawings are not drawn to scale with actual size. The emphasis is on illustrating the subject matter of the present invention.

[0019] Figure 1 This is an overall structural diagram of a rust removal device according to a preferred embodiment of the present invention;

[0020] Figure 2 This is an overall structural diagram of a rust removal device according to another preferred embodiment of the present invention;

[0021] Figure 3 This is an exploded view of the rust removal module;

[0022] Figure 4 for Figure 3 Section view in the AA direction;

[0023] Figure 5 for Figure 4 Cross-sectional view of the rust removal unit in the assembled state;

[0024] Figure 6 This is an exploded view of the rust removal module;

[0025] Figure 7 for Figure 6 Cross-sectional view of the rust removal module;

[0026] Figure 8 This is an overall structural diagram of a rust removal unit according to a preferred embodiment of the present invention;

[0027] Figure 9 An exploded view of a rust removal unit according to a preferred embodiment of the present invention;

[0028] Figure 10 A cross-sectional view of a rust removal unit in an exploded state according to a preferred embodiment of the present invention;

[0029] Figure 11 A cross-sectional view of a warhead according to a preferred embodiment of the present invention;

[0030] Figure 12 is a cross-sectional view of the rust removal unit body in an assembled state according to a preferred embodiment of the present invention;

[0031] Figure 13 This is an overall structural diagram of the rust removal unit from another perspective of a preferred embodiment of the present invention;

[0032] Figure 14 A bottom view of a rust removal system according to a preferred embodiment of the present invention;

[0033] Figure 15 A cross-sectional view of a rust removal system according to a preferred embodiment of the present invention;

[0034] Figure 16 Another overall structural diagram of the rust removal system according to a preferred embodiment of the present invention;

[0035] Figure 17 is a cross-sectional view of a rust removal unit according to a preferred embodiment of the present invention;

[0036] Figure 18 is a cross-sectional view of a rust removal unit according to another preferred embodiment of the present invention;

[0037] Figure 19-23 1 is an overall structural diagram of different embodiments of the warhead of the present invention. DETAILED DESCRIPTION

[0038] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the relevant drawings.

[0039] It should be noted that when an element is considered to be "connected" to another element, it may be directly connected to the other element and integrated therewith, or there may be an intermediate element. The terms "mounted", "one end", "the other end" and similar expressions used herein are for illustrative purposes only.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0041] like Figure 1-23 As shown, the technical solution adopted by the present invention is a rust removal device comprising a drive mechanism and a plurality of rust removal units 1 arranged in parallel. Each rust removal unit 1 includes a bullet 12 and a rust removal unit body 11 connected to the bullet 12. One end of the bullet 12 forms a striking portion 1200. Driven by the drive mechanism, the bullet 12 reciprocates relative to the rust removal unit body 11. One end of the bullet 12 is connected to the rust removal unit body 11, and the other end is a free end. When the rust to be removed approaches the free end of the bullet 12, the bullet 12 reciprocates, and the free end of the bullet 12 strikes the rust to be removed (the material 800 is generally a metal plate, such as a steel plate or iron plate). The rust on the surface of the rust to be removed is removed through the striking vibration. At the moment when the bullet 12 strikes the material 800, the material 800 is fixed by an external force, and the amplitude of the overall vibration of the material 800 is relatively small. Therefore, compared with existing rust removal devices, the noise generated by the rust removal device is relatively small. Since the bullet heads 12 are evenly distributed, the force during striking is also evenly distributed, and the rust removal effect is relatively stable.

[0042] In a preferred embodiment, the rust removal device includes multiple independently moving rust removal modules, each of which includes multiple synchronously moving rust removal units 1. During production, the corresponding number of rust removal modules can be integrated together, eliminating the need to install individual rust removal modules individually, making production and installation easier. If a module becomes damaged during use, it can be easily disassembled and replaced, making maintenance more convenient.

[0043] In a preferred embodiment, the rust removal device further includes a mounting bracket 40, and each rust removal module further includes a module bracket 20, to which the rust removal unit 1 is fixed. The module bracket 20 is movably connected to the mounting bracket 40, and the module bracket 20 can reciprocate relative to the mounting bracket 40 in the direction of movement of the bullet 12. During use, the module bracket 20 is adjusted according to the thickness of the material 800 to ensure an appropriate distance between the rust removal module and the material 800.

[0044] In a preferred embodiment, each rust removal module further includes a positioning component 30 , which is fixed to the module bracket 20 , and an adjustment spring is further provided between the module bracket 20 and the mounting bracket 40 .

[0045] In a preferred embodiment, the positioning member 30 includes a positioning roller 301, and the positioning roller 301 is arranged on the feed side of the rust removal module. During operation, the positioning wheel presses the rusted object to be removed, and when the bullet 12 reciprocates to the highest point, there is a certain distance between it and the rusted object.

[0046] In a preferred embodiment, the mounting bracket 40 includes a suspension beam 401, at least two support columns 402, a connecting column 403 and a pull rod 404. At least two support columns 402 are fixedly connected to the suspension beam 401 and extend upward relative to the suspension beam 401. The connecting column 403 is connected to the suspension beam 401 and is located between the two support columns 402. The first end of the pull rod 404 is connected to the support column 402, and the second end is connected to the connecting column 403, and the first end of the pull rod 404 is higher than the second end. Since most of the components of the entire rust removal device are assembled in the middle of the mounting bracket 40, the gravity is too great, especially when there are many rust removal modules. The gravity of the rust removal modules themselves, the gravity of the material 800 during operation, and the force applied by the power device are concentrated together, which may be difficult for an ordinary mounting bracket 40 to bear. The mounting bracket 40 used in the present invention can cleverly transfer part of the force in the middle to both sides, reducing the burden on the middle and making the overall structure more stable.

[0047] In a further preferred embodiment, the mounting bracket 40 includes a suspension beam 401, two support columns 402, two connecting columns 403, two tie rods 404, and a connecting rod 405. The two support columns 402 are respectively fixed at both ends of the suspension beam 401. The two connecting columns 403 are fixed to the suspension beam 401 and located between the two support columns 402. The two connecting columns 403 are spaced apart. The two ends of the two tie rods 404 are respectively connected to the corresponding connecting columns 403 and support columns 402. The two ends of the connecting rod 405 are connected to the two connecting columns 403. The provision of the connecting rod 405 makes the mounting bracket 400 more integrated and structurally more solid.

[0048] In another preferred embodiment, the rust removal device further includes a mounting bracket 40 and a support bracket 50, wherein a plurality of rust removal units 1 are mounted on the mounting bracket 40, and the mounting bracket 40 is mounted on the support bracket 50. Both ends of the mounting bracket 40 are connected to the support bracket 50, and the gravity of the rust removal module itself, the gravity of the material 800 during operation, and part of the force applied by the power device are transferred to the support bracket 50. A lifting assembly 60 is provided between the mounting bracket 40 and the support bracket 50, and the lifting assembly 60 is used to drive the mounting bracket 40 to rise and fall relative to the support bracket 50; the lifting assembly 60 can enable the mounting bracket 40 to drive the components mounted on it to move up and down, thereby adjusting the height of the rust removal module, so that it can be used in different scenarios, and materials 800 of different thicknesses can also be rusted using the rust removal device.

[0049] In a preferred embodiment, the rust removal device includes a first rust removal array 100 and a second rust removal array 200. A feed channel is formed between the first rust removal array 100 and the second rust removal array 200. The first rust removal array 100 and the second rust removal array 200 each include a plurality of rust removal units 1 arranged in parallel. The warheads 12 of the first rust removal array 100 and the warheads 12 of the second rust removal array 200 face opposite directions. When the material 800 passes through the feed channel, the first rust removal array 100 and the second rust removal array 200 respectively strike different surfaces of the material 800, thereby achieving simultaneous double-sided rust removal with higher efficiency. In the feeding direction of the rust removal device, the first rust removal array 100 and the second rust removal array 200 are arranged facing each other or staggered, preferably staggered. The bullet 12 of the present invention hits the material 800, generating a small-area, large-amplitude vibration, thereby removing the rust on its surface; if an opposite setting is adopted, both sides of the material 800 are subjected to force at the same time, which will inevitably cause part of the force to be offset, and the rust removal effect is relatively poor. The staggered setting can just avoid this problem and can also achieve the effect of double-sided rust removal.

[0050] In a preferred embodiment, the rust removal device includes a front rust removal array 300 and a rear rust removal array 400, which are spaced apart along the feed direction of the rust removal device. The rear rust removal array 400 is positioned on the discharge side of the front rust removal array 300. A rust detection device 500 is also positioned between the front rust removal array 300 and the rear rust removal array 400. The rust detection device 500 inspects the material 800 exiting the front rust removal array 300. If rust is detected in certain areas, the rear rust removal array 400 performs additional strikes based on the detection results. The bullet 12 in the rear rust removal array 400 selectively strikes the rusted areas. This ensures effective rust removal while avoiding the problem of excessive roughness of the material 800 caused by excessive rust removal. In a preferred embodiment, the rust detection device 500 includes a detection bracket and a camera mounted on the detection bracket. The camera is connected to the controller of the rust removal device and uses the camera to capture the surface of the material 800, then detects rust through image recognition. In this embodiment, the detection bracket is equipped with upper and lower rows of cameras for respectively photographing and detecting rust on the upper and lower surfaces of the material 800. In other embodiments, the rust detection device 500 can also detect rust using an ultrasonic probe.

[0051] In a preferred embodiment, the rear rust removal array 400 includes multiple rust removal modules that move independently of one another. Each rust removal module includes multiple rust removal units 1 that move synchronously. The rust removal device also includes a mounting bracket 40. Each rust removal module also includes a module bracket 20, to which the rust removal units 1 are fixed. A lifting drive device is provided between the module bracket 20 and the mounting bracket 40. The lifting drive device drives the module bracket 20 to reciprocate relative to the mounting bracket 40 along the direction of movement of the warhead 12. Specifically, the structure of the rear rust removal array 400 is identical to that of the front rust removal array 300. Since the function of the rear rust removal array 400 is to supplement rust removal, removing rust that was not completely removed by the front rust removal array 300, its workload is relatively small, and the rear rust removal array 400 can be set according to actual conditions.

[0052] In a preferred embodiment, a rust detection device 500 is further provided on the discharge side of the post-rust removal array 400, which can detect the rust removal qualification status of products with high rust removal quality requirements.

[0053] In a preferred embodiment, at least some of the rust removal units 1 are arranged in multiple rows and columns. Furthermore, the centers of the striking portions 1200 of at least some of the rust removal units 1 in different rows are staggered in a direction perpendicular to the feed direction of the rust removal device. This means that the projections of the multiple projectiles 12 perpendicular to the feed direction of the rust removal device are different. After the material passes through the rust removal station, the points on the rust removal plate struck by the projectiles 12 are connected to form a sheet, resulting in a more effective rust removal effect.

[0054] In a preferred embodiment, the plurality of rust removal units 1 form a parallelogram array, that is, after the plurality of rust removal units are arranged, the shape formed by their edges is roughly a parallelogram, and the angles formed by adjacent sides of the parallelogram are non-right angles.

[0055] In a preferred embodiment, the centers of the striking portions 1200 of at least some of the rust removal units 1 are arranged in a parallelogram-like pattern on the striking surface of the rust removal device. Furthermore, the line connecting the centers of the striking portions 1200 of the rust removal units 1 in the same row is tilted relative to the feed direction of the rust removal device. Adjacent projectiles 12 are staggered to avoid leaving blind spots on the plate to be rust removed.

[0056] In a preferred embodiment, at least some of the rust removal units 1 are arranged to form a striking zone, with dust curtains (not shown) positioned on the inlet and / or outlet sides of the striking zone. The lower end of the dust curtain contacts the plate to be derusted. During the derusting process, a large amount of dust is released into the air. The dust curtain traps the dust inside, reducing contamination of the air outside the curtain. Furthermore, the dust curtain is a rigid curtain with a soft edge at its lower portion. This edge contacts the plate to be derusted and serves to collect debris. Specifically, the soft edge is made of a brush or a soft polymer material.

[0057] In a preferred embodiment, a waste collection device is provided on the discharge side of the rust removal unit 1 for removing the debris removed by hammering.

[0058] In a preferred embodiment, the rust removal unit body 11 further includes a dust suction pipe 16 , the opening of which is arranged close to the knocking part 1200 for removing debris removed by knocking.

[0059] In a preferred embodiment, the discharge side of the rust removal unit 1 is provided with a spiral waste collection brush 160 and a dust collection device. The central axis of the waste collection brush 160 is arranged along the length of the rust removal unit, and the dust collection port of the dust collection device is arranged near the end of the waste collection brush 160. Specifically, the waste collection brush 160 is connected to a power mechanism, which drives the waste collection brush 160 to rotate. The spiral waste collection brush 160 can collect debris from the plate to be rusted to one side of the plate. The dust collection device is used to remove dust, reduce air pollution, and can also collect waste into a waste bin.

[0060] In a preferred embodiment, the rust removal unit body 11 includes an air cavity 10, and the bullet 12 is movably embedded in the air cavity 10. The driving mechanism includes a gas distribution mechanism 31, which is connected to the air cavity 10 and is used to introduce compressed gas into the air cavity 10 to drive the bullet 12 to reciprocate relative to the air cavity 10. Specifically, the rust removal device includes multiple gas distribution mechanisms 31, each of which is connected to multiple rust removal units 1 via a pipeline. In another preferred embodiment, the rust removal device includes multiple rust removal modules that move independently of each other, each of which includes multiple rust removal units 1 that move synchronously, and each rust removal module is connected to a gas distribution mechanism 31.

[0061] In a preferred embodiment, the rust removal mechanism mainly includes a bullet 12, an air cavity 10, a buffer cavity 103, a gas distribution mechanism 31, a shock absorbing device, a rust block recovery device, a travel drive mechanism 15, and a drive mechanism.

[0062] In a further preferred embodiment, the air chamber 10 comprises a guide hole 101 and a piston chamber 102 below the guide hole 101. The buffer chamber 103 is part of the piston chamber 102. The space enclosed by the end of the bullet 12 within the piston chamber 102 and the sidewalls of the piston chamber 102 constitutes the buffer chamber 103. The size of the buffer chamber 103 changes with the movement of the bullet 12. The bullet 12 is mounted in the guide hole 101 so that it can be raised and lowered. The sidewalls of the bullet 12 fit closely to the inner wall of the guide hole 101, isolating the piston chamber 102 from the outside atmosphere. A buffer chamber 103 is provided at the end of the piston chamber 102 away from the guide through hole 101, and a pressurizing station 104 is provided in the piston chamber 102. A vertical air channel 107 is provided in the side wall of the piston chamber 102, one end of the air channel 107 is connected to the buffer chamber 103, and the other end of the air channel 107 is connected to the pressurizing station 104. A pressure relief station 105 is provided in the guide through hole 101, and the pressure relief station 105 is connected to the atmospheric pressure; the pressurizing station 104 and the pressure relief station 105 are annular grooves.

[0063] In a further preferred embodiment, the bullet 12 includes a bullet cavity 120, a striking portion 1200 for rust removal is provided at the top of the bullet 12, and air holes are provided on the side wall of the bullet 12, which may include a first air hole 121 and a second air hole 122. When the bullet 12 is not actuated, the second air hole 122 corresponds to the pressurizing station 104, and the first air hole 121 is closed by the side wall of the guide through hole 101 in the guide through hole 101, so that the bullet cavity 120 and the piston cavity 102 are isolated from the external atmosphere. Therefore, when the gas distribution mechanism 31 sprays and pressurizes the buffer cavity 103, the gas enters the pressurizing station 104 from the buffer cavity 103 through the air channel 107 of the piston cavity 102, and the gas in the pressurizing station 104 enters the bullet cavity 120 from the second air hole 122, so that the air pressure in the bullet cavity 120 is equal to that in the piston cavity 102. At this time, the piston cavity 102 and There is a pressure difference in the external atmospheric pressure, which pushes the bullet 12 toward the guide through hole 101; the bullet 12 is pushed away from the piston chamber 102 by the air pressure until the first air hole 121 corresponds to the pressure relief station 105, so that the gas in the bullet cavity 120 is released into the external atmosphere; and because the second air hole 122 has left the pressurizing station 104 and is closed by the inner wall of the guide through hole 101, a certain pressure is maintained in the piston chamber 102. Therefore, when the bullet 12 rebounds after hitting the rust to be removed, the piston chamber 102 can act as an air cushion to prevent the bullet 12 from hitting the bottom of the buffer chamber 103 when it rebounds. In order to ensure that the bullet 12 can return to its initial position each time it rebounds, that is, the first air hole 121 corresponds to the position of the pressurizing station 104, and at the same time prevent the rebounding bullet 12 from hitting the buffer chamber 103, a shock-absorbing spring is arranged toward the bullet 12 in the buffer chamber 103. When the bullet 12 rebounds, it hits the shock-absorbing spring to slow down, so that the second air hole 122 can correspond to the pressurizing station 104.

[0064] In a further preferred embodiment, the piston cavity 102 is wide and the guide hole 101 is narrow, with a cross-section similar to a "convex" shape. The piston cavity 102 and the guide hole 101 are connected by a connecting portion, forming a second stopper 106 at the connecting portion. The lower portion of the bullet 12 is provided with a wing, which is the first stopper 123. When the bullet is extended to its maximum position, the second stopper 106 and the first stopper 123 abut, preventing the bullet 12 from extending further. At this time, the striking portion 1200 of the bullet 12 has extended beyond the cavity 10, and can reach the object to be derusted. The purpose of this arrangement is to prevent the bullet 12 from slipping out of the guide hole 101.

[0065] In the prior art, the gas distribution mechanism 31 is always located on one side of the pressurizing station 104, directly injecting gas into the pressurizing station 104. This has the disadvantage that the high-speed airflow disturbs the movement of the bullet 12, causing the bullet 12 to slow down, prolonging the entire cycle of rebound after ejection, and reducing the number of actuations of the bullet 12 per unit time, thus failing to achieve the desired rust removal effect. Therefore, the present invention disposes the gas distribution mechanism 31 below the buffer chamber 103, with the buffer chamber 103, the piston chamber 102, and the guide through hole 101 forming a straight line (with their central axes lying on the same straight line), and the gas outlet of the gas distribution mechanism 31 is staggered from the gas inlet of the airway 107, so that the buffer chamber 103 acts as a primary buffer, preventing the kinetic energy of the ejected gas from directly interfering with the bullet 12. Instead, the bullet 12 is driven by air pressure, which is beneficial for increasing the number of actuations of the bullet 12 per unit time.

[0066] In a preferred embodiment, the rust removal device also includes a linear motion drive mechanism that can drive the air cavity 10 to approach or move away from the rust object to be removed; it also includes a shock-absorbing spring 14, which is mounted outside the air cavity 10; the dust suction pipe 16 includes a rust block recovery port located on one side of the bullet 12, and the dust suction pipe 16 is connected to the rust block recovery port.

[0067] In a preferred embodiment, the rust removal unit body includes a first body 111 and a second body 112, the first body 111 and the second body 112 are connected, a pressurizing station 104 is formed on the first body 111, and a pressure relief station 105 is formed on the second body 112. An air cavity 10 is formed between the first body 111 and the second body 112, and a bullet outlet is also formed on the second body 112 for the striking part 1200 of the bullet 12 to pass through. When the bullet 12 is in an extended state, the air cavity 10 and the pressure relief station 105 are connected, and the air cavity 10 and the pressurizing station 104 are not connected. When the bullet 12 is in a retracted state, the air cavity 10 and the pressure relief station 105 are not connected, and the air cavity 10 and the pressurizing station 10 are connected.

[0068] In a preferred embodiment, the rust removal unit body includes a first body 111 and a second body 112, which are connected. Specifically, the first body 111 and the second body 112 are fixedly connected by clamping or bolting. A piston chamber 102, a buffer chamber 103, and an air passage 107 are formed within the first body 111. The buffer chamber 103 is located above the piston chamber 102 and is aligned with the piston chamber 102. Furthermore, the buffer chamber 103 is a portion of the piston chamber 102. The chamber enclosed by the connecting end of the bullet (i.e., the end located within the piston chamber 102) and a portion of the sidewall of the piston chamber 102 constitutes the buffer chamber 103. A pressurization station 104 is formed on the sidewall of the piston chamber 102 and is connected to the buffer chamber 103 via an air passage 107. The gas distribution mechanism 31 directs high-pressure gas into the buffer chamber 103, which then enters the pressurization station 104. The second body 112 is formed with a guide hole 101, and a pressure relief station 105 is provided on the sidewall of the guide hole 101. The striking portion 1200 of the bullet can pass through the guide hole 101 and extend out of the guide hole 101. The bullet 12 is formed with a bullet cavity 120, a first air hole 121, and a second air hole 122. The first air hole 121 and the second air hole 122 are both connected to the bullet cavity 120. When the bullet 12 is in the retracted state, the second air hole 122 is connected to the pressurizing station 104, and the first air hole 121 is closed by the side wall of the guide hole 101. The high-pressure airflow passes through the buffer chamber 103, the pressurizing station 104, and the second air hole 122 and enters the bullet cavity 120, so that the pressure of the bullet cavity 120 and the buffer chamber 103 remains balanced and higher than the atmospheric pressure. When the pressure becomes greater and greater, the bullet 12 can be pressed downward, so that the bullet 12 extends and hits the material 800. When the bullet 12 is in the extended state, the first air hole 121 is connected to the pressure relief station 105, and the second air hole 122 is closed by the side wall of the piston chamber 102. After the first air hole 121 is connected to the pressure relief station 105 on the second body 112, the high pressure in the bullet cavity 120 is released from the pressure relief station 105. After the bullet 12 hits the plate to be derusted, a strong rebound force is also generated, causing the bullet to quickly rebound to its original position. Since the pressure in the buffer chamber 103 still exists, the gas in the buffer chamber 103 forms an air cushion, which can cushion the rebound force of the bullet 12, reduce or even avoid the collision between the connecting end of the bullet 12 and the piston chamber 102, reduce wear, and extend the service life of the rust removal device. The material specific gravity of the second body 112 is lower than that of the first body 111. Dividing the rust removal unit body 11 into the first body 111 and the second body 112 can reduce the weight of the rust removal device without affecting its performance and save costs. Specifically, the first body 111 is made of stainless steel, and the second body 112 is made of plastic, aluminum alloy or other materials.The first body 111 includes a piston cylinder 1111, an inner cover 1113, and an outer cover 1112. The piston chamber 102 is located within the piston cylinder 1111. The bullet 12 passes through the piston chamber 102, and the other end of the bullet 12 is stuck in the piston chamber 102. The outer cover 1112 is fixed to the piston cylinder 1111. The buffer chamber 103 is surrounded by the outer cover 1112, the inner cover 1113, and the piston cylinder 1111. The inner cover 1113 is located between the piston chamber 102 and the buffer chamber 103. When the bullet 12 is extended, the bullet 12 and the inner cover 1113 seal the piston chamber 102, and the inner cover 1113 and the outer cover 1112 seal the buffer chamber 103. The buffer chamber 103 is inflated, and the gas enters the piston chamber 102 through the airway, and then enters the bullet inner chamber 120. When the air pressure is large enough, the bullet 12 is pressed out and hits the material; after being impacted, the bullet 12 resets, and the bullet 12 presses the inner cover 1113 toward the buffer chamber 103. The gas in the buffer chamber 103 forms an air cushion, which buffers the bullet 12 and the inner cover 1113, reduces the impact force, and extends the service life.

[0069] In a further preferred embodiment, the first body 111 is made of a metal material, and the second body 112 is made of a plastic material. Specifically, the first body 111 is made of stainless steel, and the second body 112 is made of a plastic material, such as PC / SAN, PC / PBT, or PC / PP. Furthermore, the first body 111 includes a piston cylinder 1111, an inner cover 1113, and an outer cover 1112. The piston cylinder 1111 is open at both ends, and the bullet 12 passes from the first end of the piston cylinder 1111 into the second end of the piston cylinder 1111, with the connecting end of the bullet 12 located within the piston cylinder 1111. The inner cover 1113 is fixed to the interior of the first end of the piston cylinder 1111, and the outer cover 1112 covers the inner cover 1113 and is fixed to the exterior of the piston cylinder 1111.

[0070] In a preferred embodiment, the second bodies 112 of at least some of the rust removal units 1 are interconnected as a single unit. This provides a more stable structure and better resistance to the impact force generated during pressure relief. Furthermore, all second bodies 112 in each rust removal module are cast as a single unit. Each rust removal module includes 4*3 or 5*4 bullets 12, each of which is equipped with a second body 112. The multiple second bodies 112 are cast as a single unit.

[0071] In a preferred embodiment, the rust removal mechanism includes a rust removal mechanism body and a bullet 12. The rust removal mechanism body is provided with a piston chamber 102 and a buffer chamber 103. The first end of the bullet 12 is located in the piston chamber 102, and the second end forms a rust removal portion that can extend out of the piston chamber 102. The rust removal portion is used to remove rust from materials, remove rust from materials, or crush materials. An inner cover 1113 is provided between the piston chamber 102 and the buffer chamber 103. The inner cover 1113 separates the piston chamber 102 and the buffer chamber 103, and the inner cover 1113 can move within the buffer chamber 103. When the bullet 12 rebounds, it first collides with the inner cover 1113. There is high-pressure gas in the buffer chamber 103. When the buffer moves within the buffer chamber 103, the high-pressure gas acts as a buffer, so that the bullet 12 is not damaged. The diameter of the buffer chamber 103 is larger than that of the piston chamber 102, and the piston chamber 102 and the buffer chamber 103 are coaxial. A step is formed between the piston chamber 102 and the buffer chamber 103. The end of the inner cover 1113 located in the buffer chamber 103 presses on this step. When the bullet 12 collides with the inner cover 1113, the buffer chamber 103 can act as a buffer. The rust removal mechanism body is provided with a pressurization station 104 and a pressure relief station 105. When the bullet 12 is in the retracted state, the piston chamber 102 and the pressure relief station 105 are not connected, and the buffer chamber 103, the piston chamber 102 and the pressurizing station 104 are connected to each other; the high-pressure gas (of course it can also be hydraulic) first enters the buffer chamber 103, then enters the pressurizing station 104 from the airway 107, and then enters the piston chamber 102 from the pressurizing station 104. When the pressure in the piston chamber 102 is large enough, the bullet 12 can be pressed out of the piston chamber 102, so that the rust removal part of the bullet 12 hits the material, which is used for rust removal, breaking the material, etc. When the bullet 12 is in the extended state, the piston chamber 102 and the pressure relief station 105 are connected, and the piston chamber 102 and the pressurizing station 104 are not connected; after the piston chamber 102 and the pressure relief station 105 are connected, the gas in the piston chamber 102 can be released, the air pressure in the piston chamber 102 is reduced, and the rebound force generated by the bullet 12 colliding with the material causes the bullet 12 to rebound quickly and then extend again.

[0072] In a further preferred embodiment, the bullet 12 is formed with a bullet cavity 120, a first air hole 121, and a second air hole 122. The first air hole 121 and the second air hole 122 are both connected to the bullet cavity 120. The bullet cavity 120 has an opening formed at the first end of the bullet 12, connecting the bullet cavity 120 with the piston cavity 102. High-pressure gas (which can also be hydraulic pressure) first enters the buffer cavity 103, then enters the pressurizing station 104 through the air passage 107, and then enters the piston cavity 102 from the pressurizing station 104.

[0073] In a further preferred embodiment, the rust removal mechanism body further includes a piston cylinder 1111 and an outer cover 1112. The piston chamber 102 is located within the piston cylinder 1111 and extends through both ends of the piston cylinder 1111. The buffer chamber 103 is located within the outer cover 1112 and is open at one end toward the piston chamber 102. The inner cover 1113 seals both the piston chamber 102 and the buffer chamber 103. The inner cover 1113 not only seals the piston chamber 102 but is also movable within the buffer chamber 103. Furthermore, the first end of the inner cover 1113 engages with the piston chamber 102, while the second end of the inner cover 1113 engages with the buffer chamber 103.

[0074] In a further preferred embodiment, a compression air groove 11130 is provided on the second end face of the inner cover 1113, and the compression air groove 11130 is connected to the buffer chamber 103. By providing the compression air groove 11130, the inner cover 1113 can be tightly abutted against the end of the side wall of the piston chamber 102, thereby achieving a better sealing effect.

[0075] In a further preferred embodiment, an air channel 107 is formed on the side wall of the rust removal mechanism body. One end of the air channel 107 is communicated with the buffer chamber 103 , and the other end is communicated with the piston chamber 102 .

[0076] In a further preferred embodiment, a first limiting portion 123 is formed at the first end of the bullet 12, and the diameter of the first limiting portion 123 is larger than the diameter of the bullet 12. A second limiting portion 106 that matches the first limiting portion 123 is provided on the side wall of the piston cylinder 1111, and the diameter of the second limiting portion 106 matches the diameter of the bullet 12. The pressurizing station 104 is located on the second limiting portion 106, and its opening faces the first limiting portion 123. Before the material is struck for the first time, there is no high-pressure gas in the buffer chamber 103 and the piston chamber 102, but due to the gravity of the bullet 12 itself, the bullet 12 is in a suspended state. When the buffer chamber 103 is filled with high-pressure gas, the high-pressure gas applies pressure to the second limiting portion 106 through the pressurizing station 104, forcing the bullet 12 to retract into the piston chamber 102 until the pressurizing station 104 is connected to the buffer chamber 103.

[0077] In a further preferred embodiment, a second air groove 1060 is provided on the second limiting portion 106, and both the air passage 107 and the pressurizing station 104 are connected to the second air groove 1060. A first air groove 1230 is provided on the first limiting portion 123, and the opening of the first air groove 1230 faces the second limiting portion 106. In other words, the first air groove 1230 and the second air groove 1060 are connected to each other.

[0078] In a preferred embodiment, the rust removal module includes a primary rust removal module and a supplementary rust removal module. The rust removal device includes a front rust removal array 300 and a rear rust removal array 400. The primary rust removal module is installed on the front rust removal array 300, and the supplementary rust removal module is installed on the rear rust removal array 400. The rust removal units 1 of the primary rust removal module are staggered to form a parallelogram array; the rust removal units 1 of the supplementary rust removal module form a square array. Figure 6 The module bracket 20 of the re-irrigation module includes a first fixing member 204 and may also include a second fixing member. A plurality of rust removal units 1 are fixed on the first fixing member 204. The first fixing member 204 and the second fixing member are connected by a telescopic device 203. The telescopic device 203 drives the rust removal units 1 on the first fixing member 204 to extend or retract. One end of the telescopic device 203 is fixed on the module bracket 20, and the other end is fixed on the mounting bracket 40. According to the detection result of the rust detection device 500, the corresponding telescopic device 203 is controlled to extend or shorten. When the rust detection device 500 detects that the rust at a certain position is unqualified, the corresponding telescopic device 203 is extended, and the rust removal module corresponding to the telescopic device 203 can contact the material 800 to remove rust from the material 800. The second fixing part includes a first shell 201 and a second shell 202. The re-firing module is located in the space formed by the first shell 201 and the second shell 202. A through hole adapted to the bullet 12 is formed on the second shell 202. The first fixing part and the rust removal unit are both located in the accommodating space. The telescopic device 203 is fixed on the first shell 201, and the bullet 12 can extend from the through hole.

[0079] In a preferred embodiment, the bullet includes a piston cylinder 1111 and a striking portion 1200. One end of the piston cylinder 1111 is connected to the striking portion 1200, and the other end is provided with a first limiting portion 123. The diameter of the first limiting portion 123 is larger than the diameter of the piston cylinder 1111. The piston cylinder 1111 is provided with a bullet cavity 120 and an air hole. The bullet cavity 120 passes through the end surface of the first limiting portion 123. The air hole is located on the side wall of the piston cylinder 1111 and is connected to the bullet cavity 120 for pressurization or pressure relief. There can be only one air hole, that is, the same air hole is used for pressurization and pressure relief. There can also be two air holes, such as a first air hole 121 for pressure relief and a second air hole 122 for pressurization. The striking surface of the striking portion 1200 is uneven. The striking surface of the bullet is set to be an uneven surface, which increases the contact area between the striking surface and the material, increases the force per unit area of ​​the material, and improves the rust removal effect.

[0080] In a further preferred embodiment, a first air groove 1230 is provided at the location where the first limiting portion 123 connects to the piston cylinder 1111. The first air groove 1230 surrounds the piston cylinder 1111. Before the first strike, the bullet is suspended in the piston cavity. The first air groove 1230 is used to press the bullet into the piston cavity. The diameter of the striking portion 1200 is smaller than the diameter of the piston cylinder 1111, and the striking portion 1200 is coaxial with the piston cylinder 1111. The striking surface of the striking portion 1200 is provided with a wear-resistant layer to increase wear resistance and extend service life. Specifically, the wear-resistant layer is made of a wear-resistant metal material such as chromium carbide, high manganese steel, or tungsten carbide.

[0081] In a further preferred embodiment, a plurality of knocking ridges 1201 and a plurality of knocking grooves 1202 are provided on the knocking surface of the knocking part 1200, and the knocking ridges 1201 and the knocking grooves 1202 are alternately arranged with knocking points scattered on the knocking surface, so that the knocking area will not be reduced, and the force per unit area will be increased, and the rust on the positions that are not in contact with the knocking surface will also be removed due to high-frequency vibration.

[0082] In a preferred embodiment, the striking surface of the striking part 1200 is provided with an annular striking groove 1202 and an annular striking ridge 1201 , the central axes of the annular striking ridge 1201 and the annular striking groove 1202 are the same, and the striking groove 1202 is spaced apart from the striking ridge 1201 .

[0083] In another preferred embodiment, the striking surface of the striking portion 1200 is provided with a plurality of striking ridges 1201 and a plurality of striking grooves 1202. The plurality of striking ridges 1201 and the plurality of striking grooves 1202 are arranged at intervals and are arranged around the central axis of the piston cylinder 1111. Furthermore, the striking surface is provided with a transverse groove 1203, which extends from one side of the striking portion 1200 to the other side of the striking portion 1200 and passes through the central axis of the striking portion 1200. The striking portion 1200 is provided with a vertical groove 1204, which is parallel to the central axis of the striking portion 1200 and extends from the striking surface of the striking portion 1200 to the other end of the striking portion 1200.

[0084] In another preferred embodiment, a plurality of knocking ridges 1201 are provided on the knocking surface of the knocking part 1200 , the plurality of knocking ridges 1201 are connected end to end, the plurality of knocking ridges 1201 are arranged around the central axis of the knocking part 1200 , and knocking grooves are formed between the plurality of knocking ridges 1201 .

[0085] In other embodiments, a plurality of striking ridges 1201 are provided on the striking surface of the striking portion 1200 , and striking grooves 1202 are formed between adjacent striking ridges 1201 , wherein some of the striking ridges 1201 are arranged around the same point.

[0086] In a preferred embodiment, the bullet includes a bullet body and a striking portion 1200. The bullet body includes a first limiting portion 123 and an intermediate portion. The diameter of the first limiting portion 123 is larger than that of the intermediate portion, and the intermediate portion is located between the first limiting portion 123 and the striking portion 1200. One end of the bullet body is connected to the striking portion 1200, and the other end is provided with the first limiting portion 123. The diameter of the first limiting portion 123 is larger than that of the bullet body. The bullet body is provided with a bullet cavity 120 and an air hole. The bullet cavity 120 extends through the end surface of the first limiting portion 123. The air hole is located on the side wall of the bullet body and is connected to the bullet cavity 120 for pressurization or pressure relief. There can be only one air hole, that is, the same air hole is used for both pressurization and pressure relief. Alternatively, there can be two air holes, such as a first air hole 121 for pressure relief and a second air hole 122 for pressurization. The striking surface of the striking portion 1200 is uneven. The striking surface of the bullet is set to be an uneven surface, which increases the contact area between the striking surface and the material, increases the force per unit area of ​​the material, and improves the rust removal effect.

[0087] In a preferred embodiment, a first air groove 1230 is provided at the location where the first limiting portion 123 connects to the bullet body. The first air groove 1230 surrounds the bullet body. Before the first strike, the bullet is suspended in the piston cavity. The first air groove 1230 is used to press the bullet into the piston cavity. The diameter of the striking portion 1200 is smaller than the diameter of the bullet body, and the striking portion 1200 is coaxial with the bullet body. A wear-resistant layer is provided on the striking surface of the striking portion 1200 to increase wear resistance and extend service life. Specifically, the wear-resistant layer is made of a wear-resistant metal material such as chromium carbide, high manganese steel, or tungsten carbide.

[0088] In a preferred embodiment, the air holes include a first air hole 121 and a second air hole 122. The vertical distance from the first air hole 121 to the striking portion 1200 is smaller than the vertical distance from the second air hole 122 to the striking portion 1200. Furthermore, the projections of the first air hole 121 and the second air hole 122 on a plane perpendicular to the central axis of the bullet body do not overlap. During the deflation process, a reaction force is generated on the bullet, forcing it to rotate.

[0089] In a preferred embodiment, a plurality of knocking ridges 1201 and a plurality of knocking grooves 1202 are provided on the knocking surface of the knocking part 1200. The knocking ridges 1201 and the knocking grooves 1202 are alternately arranged with knocking points scattered on the knocking surface, so that the knocking area will not be reduced, and the force per unit area will be increased. The rust on the positions that are not in contact with the knocking surface will also be removed due to the high-frequency vibration.

[0090] In a preferred embodiment, the striking surface of the striking part 1200 is provided with an annular striking groove 1202 and an annular striking ridge 1201 , the central axes of the annular striking ridge 1201 and the annular striking groove 1202 are the same, and the striking groove 1202 is spaced apart from the striking ridge 1201 .

[0091] In another preferred embodiment, the striking surface of the striking portion 1200 is provided with a plurality of striking ridges 1201 and a plurality of striking grooves 1202, wherein the plurality of striking ridges 1201 and the plurality of striking grooves 1202 are spaced apart and radially distributed around the central axis of the bullet body. Furthermore, the striking surface is also provided with a transverse groove 1203, which extends from one side of the striking portion 1200 to the other side of the striking portion 1200 and passes through the central axis of the striking portion 1200. The striking portion 1200 is provided with a vertical groove 1204, which is parallel to the central axis of the striking portion 1200 and extends from the striking surface of the striking portion 1200 to the other end of the striking portion 1200.

[0092] In another preferred embodiment, a plurality of knocking ridges 1201 are provided on the knocking surface of the knocking part 1200 , the plurality of knocking ridges 1201 are connected end to end, the plurality of knocking ridges 1201 are arranged around the central axis of the knocking part 1200 , and knocking grooves are formed between the plurality of knocking ridges 1201 .

[0093] In other embodiments, a plurality of striking ridges 1201 are provided on the striking surface of the striking portion 1200 , and striking grooves 1202 are formed between adjacent striking ridges 1201 , wherein some of the striking ridges 1201 are radially distributed around the same point.

[0094] In another preferred embodiment, the diameter of the buffer chamber 103 is equal to or smaller than the diameter of the piston chamber 102, and an annular convex ring 11110 is arranged between the piston chamber 102 and the buffer chamber 103. The first end of the inner cover 1113 cooperates with the inner wall of the convex ring 11110, and the second end of the inner cover 1113 cooperates with the buffer chamber 103, and the inner cover extends into the interior of the piston chamber 102.

[0095] In a preferred embodiment, the driving mechanism is connected to the buffer chamber 103 , and the driving mechanism introduces compressed fluid into the buffer chamber 103 . Driven by the compressed fluid, the bullet 12 performs reciprocating motion relative to the striking mechanism body.

[0096] The present invention further provides a rust removal system comprising a material conveying device and any of the above-described rust removal devices, wherein the rust removal device is disposed on or to the side of the material conveying device, and the striking portion 1200 of the bullet 12 faces the feed surface of the material conveying device. The material conveying device can be a conveyor belt, conveyor rollers, conveyor chain, or the like.

[0097] In a preferred embodiment, the rust removal system also includes a soundproof enclosure, which is positioned over the rust removal unit. In another preferred embodiment, the rust removal system also includes a soundproof enclosure 700, which is positioned over the rust removal device, with the material conveyor passing through the enclosure. Compared to existing marble-type rust removal devices, the noise generated by the rust removal device of the present invention during the rust removal process is lower in decibels and has a shorter propagation distance. Therefore, the soundproof enclosure 700 effectively isolates the noise and reduces noise pollution.

[0098] The rust removal device of the present invention integrates the equipment required for rust removal, thereby reducing the equipment required for the rust removal device, making the rust removal device much smaller than the traditional rust removal device, and reducing the floor space occupied.

[0099] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0100] The above-described embodiments merely represent specific implementations of the invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person of ordinary skill in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A rust removal module, characterized in that: The rust removal device comprises a plurality of rust removal units and a module bracket, wherein the plurality of rust removal units are fixed on the module bracket, the rust removal unit comprises a rust removal unit body and a bullet, the rust removal unit body is provided with an air cavity, the bullet is movably embedded in the air cavity, and an external gas distribution mechanism is connected to the air cavity for introducing compressed gas into the air cavity to drive the bullet to reciprocate relative to the air cavity; At least some of the rust removal units are distributed in multiple rows and columns, and in a direction perpendicular to the feeding direction of the rust removal device, the centers of the knocking parts of at least some of the rust removal units in different rows are staggered; The rust removal unit body includes a first body and a second body, the first body and the second body are connected, a piston chamber, a buffer chamber and an air channel are formed in the first body, a pressurizing station is formed on the side wall of the piston chamber, and the pressurizing station is connected to the buffer chamber through the air channel, a guide through hole is formed on the second body, and a pressure relief station is provided on the side wall of the guide through hole, and the striking portion of the bullet can pass through the guide through hole and can extend out of the guide through hole; The bullet comprises a bullet cavity, a first air hole, and a second air hole, wherein the first air hole and the second air hole are both connected to the bullet cavity; when the bullet is in a retracted state, the second air hole is connected to the pressurizing station, and the first air hole is closed by the side wall of the guide through hole; when the bullet is in an extended state, the first air hole is connected to the pressure relief station, and the second air hole is closed by the side wall of the piston cavity; a vertical distance from the first air hole to the striking portion is smaller than a vertical distance from the second air hole to the striking portion, and projections of the first air hole and the second air hole on a plane perpendicular to the central axis of the bullet body do not overlap; The first body includes a piston cylinder, an inner cover and an outer cover, the piston chamber is located in the piston cylinder, the bullet passes through the piston chamber, and the other end of the bullet is stuck in the piston chamber, the outer cover is fixed to the piston cylinder, the buffer chamber is surrounded by the outer cover, the inner cover and the piston cylinder, and the inner cover is located between the piston chamber and the buffer chamber; when the bullet is extended, the bullet and the inner cover seal the piston chamber, and the inner cover and the outer cover seal the buffer chamber; when the bullet is reset, the bullet presses the inner cover toward the buffer chamber; A plurality of the rust removal units are integrated into one rust removal module. When producing a rust removal device, only the rust removal module needs to be installed.

2. The rust removal module according to claim 1, characterized in that: The rust removal unit includes a bullet, the free end of the bullet is a knocking part, and the rust removal unit also includes a dust suction pipe, the opening of the dust suction pipe is arranged close to the knocking part.

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